Unfortunately we don't have this information, but you could check with your local county Master Gardener group, who might have also benefitted from item giveaways or low-cost sources for supplies in the past. You can inquire with the county MG coordinator via information on the linked page if visiting a Plant Clinic or other MG event is not convenient.

Sometimes tree care companies participate in "chip drop" apps, where you can request a truckload (the amount they give you is often non-negotiable, so it can be a lot) of wood chips after they've ground-up a tree. We don't know how many such apps exist, nor do we have recommendations for which to use, but that might be worth trying.

Miri